Administrator's Guide - Kerio Software Archive

Glossary of termsIt is possible under certain conditions to access the email account using both IMAP andPOP3 protocols.IPIP (Internet Protocol) is a protocol which uses its data part to convey all the other protocols.The most important information in its header is the source and destination IPaddress, i.e. by which host the packet was sent and to which host it should be delivered.IP addressIP address is a unique 32-bit number used to identify the host in the Internet. Itis represented by four bytes in the decimal system (0-255) separated by dots (e.g.200.152.21.5). Each packet includes the information on where the packet was sent from(source IP address) and to which host it should be delivered (destination IP address).KerberosProtocol for secure user authentication in network environments. It was designed by MIT(Massachusetts Institute of Technology) within the Athena project. The protocol is basedon such principles where the third side is trustworthy. Users use their passwords to authenticateto the central server (KDC, Key Distribution Center) and the server sends themencrypted tickets which can be used to authenticate to various services in the network.LDAPLDAP (Lightweight Directory Access Protocol) is an Internet protocol used to access directoryservices. Information about user accounts and user rights, about hosts includedin the network, etc. are stored in the directories. Typically LDAP is used by email applicationsto search for email addresses and to delivery management (Microsoft ActiveDirectory).Mailbox AccountA place where email is stored on a server. Clients can download emails from an account(using POP3 protocol) or work with messages directly at the server (using IMAP or Web-Mail).The account is physically represented by a directory on a disk. The directory is createdin the Kerio MailServer directory (mail/user_name). Other subdirectories representingindividual folders are created in this directory.Mailboxes are not created during the definitions of users, the concrete mailbox is createdafter the first email to this mailbox is received.MAPIMAPI (Messaging Application Programming Interface) is an application programming interface(API) designed by Microsoft. Any software that supports MAPI can communicatewith any mailserver (Kerio MailServer) and send and receive data via this interface regardlessof their type and software provider.396